Black-fronted Nunbird
Monasa nigrifrons
The black-fronted nunbird is 26 to 29 cm (10 to 11 in) long and weighs 68 to 98 g (2.4 to 3.5 oz). The adult of the nominate subspecies is mostly sooty black that is darkest around the bill (the "front"). The rear part of the body is blue-gray and the tail blue-black. The bill is red, the eye dark, and the legs black. M. n. canescens is slightly paler and grayer than the nominate. The juvenile of both is a dirty slate gray with irregular reddish marks. Voice: The black-fronted nunbird's song is " a rapid series of melodious upslurred 'clerry' or 'curry' whistles, broken by occasional downslurred 'turra turra' trill". It is often sung as a chorus by several birds.
ID text from Wikipedia, CC BY-SA 4.0
Black Nunbird
Monasa atra
The black nunbird is 25 to 29 cm (9.8 to 11 in) long and weighs 74 to 104 g (2.6 to 3.7 oz). The adult's upperparts are glossy blue-black and the underparts dark gray to light gray. The lesser coverts are white, showing as a wide white band on the closed wing. The bill is red, the eye red to brown, and the legs and feet slaty black. Immatures are sootier above and browner below than the adult. Voice: The black nunbird's songs are a "lute-like 'whoo-doo-doo' and descending 'hyoo-hoo-hoo-oo-oo-oo'". Calls include a "loud 'yawkl-diddl' or 'quee-didada'".
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Black-fronted Nunbird and Black Nunbird.